Tusk Cartridge Rod Holding Tool HONDA KAWASAKI SUZUKI YAMAHA This tool is a must for disassembly and assembly on KYB and Showa Twin/Dual Chamber forks. The tool holds back the spring force allowing you to remove or install the bottom nut on Twin/Dual chamber forks or the cap on cartridge type forks. Made from 6061 T-6 aluminum and features a tapered edge for easier installation.